Leather-staking machine.



A. C. LAYMAN.

LEATHER STAKING MACHINE.

APPLICATION FILED OCT- 2. 1912.

Patented July 4 1916.

2 SHEETS-SHEET 1-.

ALFRED C. LAYMAN, 0F WILMINGTON, DELAWARE.

LEATHER-STAKING MACHINE.

Specification of Letters Patent.

Patented July 4, 1916.

Original application filed March 11, 1911, Serial No. 613,692. Divided and this application filed October 2, 1912. Serial No. 723,537.

T 0 all whom it may concern Be it known that I, ALFRED O. LAYMAN, a citizen of the United States, and a resident of Wilmington, New Castle county, Delaware, have invented certain Improvements in Leather-Staking Machines, (being a divi sion of my application for patent for improvements in staking-machines filed March 11, 1911, Serial No. 613,692 now Patent No. 1,043,050, dated October 29, 1912), of which the following is a specification.

My invention relates to leather staking machines; and one object of my invention is to provide an improved form of removable table or tables therefor, readily detachable when it is desired to repair or inspect the machine.

A further object of my invention is to provide the machine with a breast roll connected to the table structure by improved supporting means permitting rotative movement of said roll to compensate for wear to any extent desired without reference to any predetermined position.

These and other features of my invention are more fully described hereinafter, reference being had to the accompanying drawings, in which:

Figure 1, is a side elevation of a staking machine to which the improvements forming the subject of my invention have been applied; Fig. 2, is a side elevation illustrating the supporting means for the supplemental table structure at the front of the machine; Fig. 3, is a sectional view on the line a-a, Fig. 2; Fig. 4, is a plan v1ew of part of the supplemental table structure showing its connection with the staking machine; Fig. 5, is a front elevation of the breast roll and supporting means therefor, partly in section, and Fig. 6, is a sectional elevation illustrating both parts of the table structure in proper relative position with respect to the machine.

One form of staking machine to which the structure forming the subject of my present invention may be applied is that shown and described in my Patent No. 1,043,050, dated Oct. 29, 1912, and hence it seems unnecessary to refer to the same except in general terms.

In the drawings, 1, 1, represent the side frames of the staking machine in which a cross-head 2 is arranged to reciprocate; being driven by a fly-wheel 3 through the medium of a connecting-rod 4. This crosshead carries a pair of staking arms 5 and 6, having the usual staking elements, comprislng a roller 7 and blades 8 and 9, respectively.

At the forward end of the side frames 1 of the machine, I provide supporting means upon which the hides and skins rest during the staking operation in the shape of a pair of tables or shelves which are removably connected with the frame. The tables are indicated at 10 and are carried by brackets 11 suitably secured to the side frames of the machine; said brackets having wedgeshaped blocks 12 adapted to enter dovetailed grooves 13 in plates 14, which plates are secured to and may form part of said tables. The forward ends of these dovetailed grooves are widened at 13 so that they may be readily presented to the wedge-shaped blocks 12 carried by the brackets 11, and to insure ease of engagement and disengagement, the wedge-shaped blocks are supported by suitable springs 15 surrounding their threaded stems 16 so that when the nut 17 in engagement with said threaded stem is released, the blocks will rise slightly and be in position to freely enter the upper and larger portion of the dovetail grooves. When brought to proper position, the table structure may be locked by turning the nuts 17, bringing the wedge-shaped blocks into engagement with the lower portions of the walls of the dovetail grooves.

My improved table is adjustable longitudinally of the machine, and may be readily held by the clamping means in its adjusted positions. By releasing the clamping devices, the desired adjustment may be easily made, substantially instantaneously, and the table may' be subsequently held in the desired adjusted position by tightening such clamps.

The outer ends of the separate portions of the table structure are connected by a cross piece 18, having its upper central portion cut away for the reception of asub-v stantially cylindrical member or roll 19, over which the skins are passed by the operator. This member is really in the nature of a breast roll against which the operator leans to hold the skin during the staking operation. Constant use in the manner indicated wears the same irregularly, since it is usually and preferably made Of rubber,

and to provide for adjustment of this member whereby to effect as nearly as possible an even wear of the same, its shaft or spindle ends 20 are mounted in bearings 21, part of which are formed in the table and part of which are hinged, which bearings may be held in closed position by lock nuts 22- engaging threaded stems 23 carried by the hinged portions of the bearings and passing through apertures 24: in the cross piece 18. The nuts have suitable operating means, which may be in the form of a handle or lever 25 pivoted thereto. By securely holding the threaded stems 23, they serve to frictionally retain said shaft or spindleends in their journals or bearings against movement. Should wear occur, the bearings may be slightly opened by releasing the nuts and the member or roll 19 shifted slightly in said bearings so as to bring a fresh face into position for engagement by the operator. It will be noted that this shifting may be to any desired extent; that is to say, as the spindles 20 are round and fit in round bearings, the amount of adjustment need not be predetermined nor governed by any of the mechanism employed to hold said roll in its adjusted po sitions.

I claim:

1. In a leather staking machine, the combination of staking devices, a frame, a supplemental table detachably connected to said frame and longitudinally adjustable with respect to the same, and clamping means carried by said frame for securing said table in its adjusted positions.

2. In a leather staking machine, the combination of staking devices, a frame, brackets fixed to said frame, a two-part supplemental table supported by said brackets and longitudinally adjustable with respect to the frame, and clamping means carried by said brackets for securing the table in its adjusted positions.

3. In a leather staking machine, a frame, a supplemental table, a bracket fixed to the frame to removably support said supple- Gepiee of this patent may be obtained. for five cents mental table, the latter having a groove, and clamping means adapted to the groove of said supplemental table carried by said bracket.

a. In a leather staking machine, a frame, a supplemental table having a groove with a flaring end, a bracket carried by the frame to removably support said supplemental table, and clamping means for said supplemental table carried by said bracket comprising a dovetailed member fitting the groove, a clampin screw, and a spring for releasing said member when the screw is backed off.

5. In a leather staking machine, a frame, supplemental tables carried at the forward end of said frame, means for adjustably holding said tables longitudinally with respect to said frame, and a connecting member for the forward end of said supplemental tables.

6. In a leather staking machine, the combination of staking devices, a frame, brackets fixed to said frame, a. two-part supplemental table supported by said lnackets and longitudinally adjustable with respect to the same, clamping means carried by said brackets for securing the two-part table thereto in its adjusted posit-ions, and a connecting member for the forward end of said two-part supplemental table.

7. In a leather staking machine, a frame, a pair of supplemental tables, independent brackets fixed to the frame to rcmovably support saidsupplemental tables, the latter being grooved, clamping means adapted to the grooves of said supplemental tables carried by said brackets, and a connecting member for the forward end of said supplemental tables.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

ALFRED G. LAYLEAN.

Witnesses MURRAY C. BoYnn, War. A. BARR.

each, by addressing the Bommissicner of Patents,

Washington, D. G. 

